Guatemala, Solola Department, Lake Atitlan with San Pedro Volcano and the town of San Pedro la Laguna at its base. Lake Atitlan is a giant volcanic crater or caldera filled with water.

Greece, Santorini, Oia, Overlooking the clifftop town.

Greece, Santorini, Oia, Agios Spiridonas Church in front, and Anastasi Church behind.

Greece, Santorini, Oia, Panagia Platsani Church, Caldera Square.

Greece, Santorini, Oia, Bell tower of Panagia Platsani Church, Caldera Square.

Greece, Santorini, Oia, Overlooking the clifftop town.

Greece, Santorini, Oia, Anastasi Church in front and Agios Spiridonas Church behind.

Tanzania, Ngorongoro Crater, African Buffalo in Conservation Area.

Tanzania, Ngorongoro Crater, Grant's Gazelle in Conservation Area.

Tanzania, Ngorongoro Crater, Giraffe walking across scrubland in the upper part of the Conservation Area.